Washington on Wednesday warned US citizens of the potential for new "terrorist threats" in Yemen, Osama bin Laden's ancestral home, as the al-Qaeda network seeks to re-establish itself in the country and elsewhere.

"The security threat to all US citizens in Yemen remains high due to continuing efforts by al-Qaeda to re-constitute an effective operating base," the State Department said in a statement.

"This could lead to possible attacks by extremist individuals or groups against US citizens, facilities, businesses and perceived interests," it said. (Albawaba.com)